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Eight‑Element GNSS Anti‑Jamming Antenna Module 8130 for UAVs and Vehicles

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Product Description

AJU‑8130 eight‑element GNSS anti‑jamming antenna module amplifies useful BDS B1, GPS L1 and Galileo E1 signals while filtering interference, greatly enhancing UAV and unmanned vehicle navigation safety and reliability.

Product Overview

The AJU-8130 integrates an array antenna, digital anti-jamming processor and optional GNSS receiver into a single low profile unit, simplifying system design for OEMs and integrators.
It receives, amplifies, down converts, filters and adaptively cancels interference on eight RF channels for BDS B1, GPS L1 and Galileo E1, then up converts and outputs a clean GNSS signal or PVT data.
With a wide DC 9–36 V power input and compact 130 × 130 mm footprint, it is well suited for UAV roofs, vehicle roofs and fixed installations.

Key Features and Benefits

Eight-element GNSS array for spatial filtering, providing significantly stronger anti jamming capability than single-patch antennas.

Supports BDS B1, GPS L1 and Galileo E1 frequency bands, enabling multi constellation operation and higher satellite availability.

Suppresses broadband, narrowband, swept frequency and pulse jammers, as well as combinations of these interference types in the B1/L1/E1 bands.

Handles 1–7 interference sources coming from different directions, keeping GNSS lock where conventional antennas easily fail.

Optional built in receiver outputs Position, Velocity and Time (PVT) after anti jamming processing, reducing the need for external GNSS modules.

Soft-bypass and anti jamming modes are selectable via serial commands, which is convenient for debugging, factory test and field verification.

Product Drawings of Anti-Jamming Unit

Figure 2-1 Product Drawings of Anti-Jamming Unit

Figure 2-2 Dimensions Drawing of Anti-Jamming Unit

Main Technical Parameters

GNSS & Anti Jamming Performance

Item	Specification	Notes
Supported frequency bands	BDS B1, GPS L1, Galileo E1	Multi constellation GNSS support
Number of channels	8 channels	Eight element array processing
Interference types	Broadband, narrowband, sweep, pulse, combinations	Suppression within B1/L1/E1 bands
Number of interferers	1–7 sources	Different directions in space
Single broadband rejection	≥110 dB @ -130 dBm	High resistance to one strong jammer
Three broadband rejection	≥100 dB @ -130 dBm	Strong performance with multiple jammers
Seven broadband rejection	≥85 dB @ -130 dBm	Maintains navigation in extreme RF scenes
Spatial anti jamming range	Azimuth 0°–360°, elevation -10°–90°	Near hemispherical protection around unit

RF Output

Item	Specification	Notes
RF output power	-55 dBm ~ -70 dBm	For standard GNSS receivers
RF impedance	50 Ω	Typical system impedance
Output VSWR	≤2.0	Ensures good RF matching
RF connector	SMA K (female)	Outputs processed B1/L1/E1 signal
Antenna port burnout resistance	≥10 W	Tolerates high power input at RF port

Built In Receiver (Optional)

Item	Specification	Notes
Supported frequencies	B1, L1, E1	Matches front end bands
Horizontal accuracy	≤7 m (95%, PDOP ≤4)	After anti interference processing
Vertical accuracy	≤9 m (95%, PDOP ≤4)	Suitable for most UAV/vehicle uses
Velocity accuracy	≤0.2 m/s (95%)	Good for guidance and control loops
Output data	PVT solution via data interface	Direct to controller or navigation computer

Power, Interface and Control

Item	Specification	Notes
Operating voltage range	DC 9 V ~ 36 V	Wide input for different platforms
Average power consumption	≤12 W	Includes processing and receiver (if enabled)

J30J 9ZK Power & Data Connector

Pin	Signal	Description
1	+9 V ~ +36 V	Power input
2	+9 V ~ +36 V	Power input (parallel)
3	GND	Power ground
4	GND	Power ground
5	RS422 RX	RS422 receive , data/config
6	RS422 RX+	RS422 receive+
7	RS422 TX	RS422 transmit
8	RS422 TX+	RS422 transmit+
9	GND	Ground

The RS422 interface is used for configuration, status monitoring and switching between soft bypass mode and full anti jamming mode.

Mechanical Design

Item	Specification	Notes
Dimensions (L × W × H)	130 mm × 130 mm × 23.7 mm (±0.5 mm)	Low profile square form factor
Product weight	≤500 g	For medium UAVs, UGVs and vessels
Housing	Natural aluminum, conductive oxidation	Shielding and heat dissipation
Radome color	Silver gray / white	RF transparent protective cover
Mounting interface	4 × M2.5 threaded holes, depth 2.4 mm (side)	For bracket or panel mounting

Installation notes:

The bottom surface is a metal heat dissipation plate and should be closely fitted to a metal plane or placed where airflow is sufficient to improve cooling performance.

The top surface is the GNSS receiving plane and must face the open sky without obstruction; if installed inside a body, the structure above it must be made of RF transparent material with at least 92% transmission in the L band.

Environmental and Reliability

Item	Specification
Operating temperature	-40 ℃ ~ +65 ℃, 10%–90% RH, non condensing
Storage environment	-45 ℃ ~ +85 ℃, 10%–95% RH, non condensing
Waterproof rating	Not lower than IP65
MTBF	≥2000 h
Continuous operating time	≥24 h
Shock test standard	ISO 19453 3:2018 (civil small/light UAS shock)
Vibration test standard	ISO 5309:2023 (civil small/light UAS vibration)

Delivery Contents and Packaging

No.	Item	Quantity	Notes
1	AJU-8130 anti-jamming unit	1	130 mm × 130 mm module
2	Connection cable	Optional	Customizable length and connectors
3	Built in navigation receiver	Optional	e.g. u blox NEO M9N, UM960
4	G1 frequency option	Optional	Not enabled by default; increases power draw when selected
5	Mounting screws	1 set	4 × M2.5 × 2.4 mm screws
6	Documentation	1 set	User manual and technical documents

The AJU-8130 is shipped in a paper carton with internal shock absorbing and drop resistant cushioning to protect the device during transportation and repeated handling.

For technical consultation, OEM/ODM cooperation or quotation, please feel free to contact us via email or WhatsApp, and our GNSS and antenna engineers will provide professional support based on your project requirements.